Apache Ambari Operations
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The following table lists configuration versioning terms and concepts that you should know.

configuration property

Configuration property managed by Ambari, such as NameNode heap size or replication factor

configuration type (config type)

Group of configuration properties: for example, hdfs-site

service configurations

Set of configuration types for a particular service: for example, hdfs-site and core-site as part of the HDFS service configuration

change notes

Optional notes to save with a service configuration change

service config version (SCV)

A particular version of a configuration for a specific service

host config group (HCG)

A set of configuration properties to apply to a specific set of hosts